Results 11 to 20 of about 23,344 (257)
Aerodynamic performance of dragonfly wing model that starts impulsively: how vortex motion works
Journal of Fluid Science and Technology, 2023 The cross-section of dragonfly wings has corrugated structures. In particular, the leading-edge side of the wing consists of V-shaped structures. According to previous studies, a corrugated wing may exhibit high aerodynamic performance at low Reynolds ...
Yusuke FUJITA, Makoto IIMA
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Forma, 2015 Summary: Dynamics of vortices of filament type is introduced for the following three cases: deformation of a vortex filament by self-induction, entanglement of two vortex filaments by self- and mutual inductions and reconnection of two vortex filaments. The first two cases are treated by the use of vorticity equation without the viscous term, while the
Christophe Bailly +1 more
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Universal dynamics in the expansion of vortex clusters in a dissipative two-dimensional superfluid
Physical Review Research, 2020 A large ensemble of quantum vortices in a superfluid may itself be treated as a novel kind of fluid that exhibits anomalous hydrodynamics. Here we consider the dynamics of vortex clusters under thermal friction and present an analytic solution that ...
Oliver R. Stockdale +7 more
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How trapped particles interact with and sample superfluid vortex excitations
Physical Review Research, 2020 Particles have been used for more than a decade to visualize and study the dynamics of quantum vortices in superfluid helium. In this work we study how the dynamics of a collection of particles set inside a vortex reflects the motion of the vortex.
Umberto Giuriato +2 more
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Parametric resonance in the dynamics of an elliptic vortex in a periodically strained environment [PDF]
Nonlinear Processes in Geophysics, 2017 The model of an elliptic vortex evolving in a periodically strained background flow is studied in order to establish the possible unbounded regimes.
K. V. Koshel, E. A. Ryzhov
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Applications of point vortex equilibria: blocking events and the stability of the polar vortex [PDF]
Tellus: Series A, Dynamic Meteorology and Oceanography, 2015 The present study investigates non-linear dynamics of atmospheric flow phenomena on different scales as interactions of vortices. Thereby, we apply the idealised, two-dimensional concept of point vortices considering two important issues in atmospheric ...
Annette Müller +5 more
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Dynamics of a vortex dipole in a holographic superfluid
Journal of High Energy Physics, 2021 We use holography to investigate the dynamics of a vortex-anti-vortex dipole in a strongly coupled superfluid in 2+1 dimensions. The system is evaluated in numerical real-time simulations in order to study the evolution of the vortices as they approach ...
Carlo Ewerz +2 more
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Vortex dynamics of wakes [PDF]
Nelineinaya Dinamika, 2006 Summary: Several problems related to the dynamics of vortex patterns as observed in wake flows are addressed. These include: The universal Strouhal-Reynolds number relation. The Hamiltonian dynamics of point vortices in a periodic strip, both the classical two-vortices-in-a-strip problem, which gives the structure and self-induced velocity of the ...
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Physical Review X, 2023 Unveiling nonequilibrium dynamics of solitonic and topological defect structures in a multidimensional nonlinear medium is a current frontier across diverse fields.
Hikaru Tamura +2 more
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Dynamic Characteristics and Effect on Thrust of Jet Tail Vortex Ring for Pump Jet Propulsion
Frontiers in Energy Research, 2022 When a pump is propelled by a propeller, the nozzle flooding of the jet wake area will produce a turbulent quasi-sequence structure and have a certain impact on the outflow field structure and thrust characteristics of the water jet propulsion pump.
Wei Han +7 more
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